..., but if I had invested my money just in Bitcoin and done nothing, I´d have much more by now.

Exactly! It is always better to invest in BTC directly. The difficulty will always increase and your btc return will start diminish exponentially.

Time to break even: 120 Days

The time to break even will be much longer. Beware that cloud mining is a poor investment. You will be lucky if you get break even.